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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 942 · 40 questions
TalentJR

The trick (Split and double): Split the number into tens and ones: 37 = 30 + 7. Double each part (30 → 60, 7 → 14) — or halve each part. Add the two answers: 60 + 14 = 74.

NameDateTime takenScore ___ / 40
  1. 1.Double 63 =
  2. 2.Half of 58 =
  3. 3.Half of 134 =
  4. 4.Double 62 =
  5. 5.Half of 56 =
  6. 6.Double 61 =
  7. 7.Half of 152 =
  8. 8.Double 73 =
  9. 9.Half of 42 =
  10. 10.Double 44 =
  11. 11.Half of 82 =
  12. 12.Half of 162 =
  13. 13.Double 12 =
  14. 14.Half of 184 =
  15. 15.Double 45 =
  16. 16.Half of 142 =
  17. 17.Half of 84 =
  18. 18.Double 98 =
  19. 19.Half of 112 =
  20. 20.Half of 138 =
  21. 21.Half of 196 =
  22. 22.Double 25 =
  23. 23.Half of 188 =
  24. 24.Half of 126 =
  25. 25.Double 72 =
  26. 26.Double 41 =
  27. 27.Half of 182 =
  28. 28.Double 96 =
  29. 29.Double 88 =
  30. 30.Double 28 =
  31. 31.Double 51 =
  32. 32.Double 35 =
  33. 33.Half of 104 =
  34. 34.Half of 92 =
  35. 35.Half of 158 =
  36. 36.Double 84 =
  37. 37.Double 53 =
  38. 38.Double 29 =
  39. 39.Half of 46 =
  40. 40.Half of 108 =

Answer key

  1. 126
  2. 29
  3. 67
  4. 124
  5. 28
  6. 122
  7. 76
  8. 146
  9. 21
  10. 88
  11. 41
  12. 81
  13. 24
  14. 92
  15. 90
  16. 71
  17. 42
  18. 196
  19. 56
  20. 69
  21. 98
  22. 50
  23. 94
  24. 63
  25. 144
  26. 82
  27. 91
  28. 192
  29. 176
  30. 56
  31. 102
  32. 70
  33. 52
  34. 46
  35. 79
  36. 168
  37. 106
  38. 58
  39. 23
  40. 54

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